Alexandre Mayran
alexandremayran.bsky.social
Alexandre Mayran
@alexandremayran.bsky.social
Reposted by Alexandre Mayran
And we have another open position, this time with a focus on Genome Biology! Join a great community in Vienna to bring your research to the next level!
📢 Open Call! The Max Perutz Labs invite applications for a Tenure-Track Professorship in Genome Biology. We are particularly interested in researchers investigating the molecular and biophysical mechanisms underlying genome function and regulation. More details ➡️ tinyurl.com/3t7vvdct
November 6, 2025 at 4:35 AM
Reposted by Alexandre Mayran
Spread the word! There is a professor position opening at our University @upcite.bsky.social. There are several possible (great) labs to join, but if you are interested in DNA methylation and epigenetics in mammals, don't hesitate to contact me directly!
#JobOffer

💼 Un poste susceptible d’être vacant de Professeur en stabilité des génomes devrait s’ouvrir pour la rentrée 2026 au sein de l’Institut Jacques Monod

➡️ Informations concernant ce poste et la procédure de candidature 🔗 www.ijm.fr/poste-de-pro...
October 28, 2025 at 1:51 PM
Reposted by Alexandre Mayran
Really excited to present the results of a fantastic collaboration with Jesse Veenvliet @jesseveenvliet.bsky.social @mpi-cbg.de @poldresden.bsky.social 🤩

We find a unique mechanism for body axis elongation in mammals, different from other vertebrate species

➡️ www.biorxiv.org/content/10.1...
October 28, 2025 at 8:25 AM
Reposted by Alexandre Mayran
thanks for sharing this tool. I was all the more impressed that I also gave it 'non' biological papers : it found very technical gaps. It also scans and interprets the figures, and all of this is done very quickly. I honestly think this approach is going to revolutionize our way to deal with papers.
October 15, 2025 at 9:17 PM
Reposted by Alexandre Mayran
🧵1/ Excited to share our new paper introducing a new #singlecell assay: scTF-seq, a high-throughput single-cell approach to explore how transcription factor (TF) dose shapes cell identity and reprogramming outcomes. 🔗 www.nature.com/articles/s41... Big congrats to the entire team @EPFL & @SIAT_China
Dissecting the impact of transcription factor dose on cell reprogramming heterogeneity using scTF-seq - Nature Genetics
This study introduces single-cell transcription factor (TF) sequencing, a single-cell barcoded and doxycycline-inducible TF overexpression approach that reveals dose-sensitive functional classes of TFs and cellular heterogeneity by mapping TF dose-dependent transcriptomic changes during the reprogramming of mouse embryonic multipotent stromal cells.
www.nature.com
October 6, 2025 at 6:57 AM
Reposted by Alexandre Mayran
In this beautiful system, we could show uncoupling of gene expression profiles, morphology and patterning… #NotInTheGenes 😉 (also includes a method to do long term 🔬 of elongating gastruloids)
Thank you to all involved @jeromewongng.bsky.social @thomasgregor.bsky.social @alexandremayran.bsky.social
Modifying mechanical constraint guides gastruloid patterning

This Research Highlight showcases the work from Judith Pineau @judithpineau.bsky.social, Jerome Wong-Ng @jeromewongng.bsky.social, Thomas Gregor @thomasgregor.bsky.social and colleagues:

journals.biologists.com/dev/article/...
October 3, 2025 at 8:18 AM
Reposted by Alexandre Mayran
#ResultatScientifique 🔎| Faire taire les gènes est aussi crucial que les activer : le répresseur Snail révèle son rôle essentiel dans le développement embryonnaire 🧬
✍️ @laghalab.bsky.social et Ovidiu Radulescu
📕 @natcomms.nature.com | buff.ly/pmtzA1t
L’art délicat de faire taire les gènes
Le développement embryonnaire ne requiert pas uniquement l’activation des gènes, mais également une régulation fine de leur répression.
buff.ly
September 29, 2025 at 2:01 PM
Reposted by Alexandre Mayran
Are digits modified fins, or evolutionary innovations? Read how we tackled this old question from a new angle🧪
A story with @chasebolt.bsky.social, @homeobox.bsky.social and myself, coordinated by @denisduboule.bsky.social from @college-de-france.fr and published in @nature.com today!
#InHoxWeTrust
September 17, 2025 at 5:26 PM
Reposted by Alexandre Mayran
Out today. 🙏 again to everyone for this wonderful piece of work, in particular to Aurelie @aurhin.bsky.social Chase @chasebolt.bsky.social and Brent @homeobox.bsky.social. 🙏 also to the Harris lab @fish4walking.bsky.social and @neilshubin.bsky.social @biology-unige.bsky.social @college-de-france.fr
September 17, 2025 at 5:30 PM
Reposted by Alexandre Mayran
🚀 Looking for a Bioinformatician / Data Scientist to join our crew and explore regeneration through single-cell genomics & evolutionary biology! @mpi-bio-fml.bsky.social
📩 Questions? Contact us ✉️
🔗 Apply here: www.mpg.de/25243280/bio...
Bioinformatician / Data Scientist (m/f/d)
Bioinformatician / Data scientist position in the Aztekin Lab focusing on Structural Regeneration and support the working group together with the other members
www.mpg.de
September 15, 2025 at 6:58 AM
Reposted by Alexandre Mayran
Similar huge trend at last round of @erc.europa.eu grant application. @ec.europa.eu must adapt to this trend!
September 14, 2025 at 7:10 AM
Reposted by Alexandre Mayran
Pleased to announce launching Institut Cochin Foundation, on Sept. 18 at 6 p.m., upon registration, either in the Rosalind Franklin room, 22 rue Méchain, Paris or via video conference: presentation of @institutcochin.bsky.social, meet researchers and call for donations-thanks for your support!
September 6, 2025 at 6:46 AM
Reposted by Alexandre Mayran
Please RP.
We are thrilled to announce that our lab’s first preprint is out!
”Whole-genome single-cell multimodal history tracing to reveal cell identity transition”

We report HisTrac-seq, a multiomic single-cell molecular recording platform.
www.biorxiv.org/content/10.1...
August 16, 2025 at 7:15 AM
Reposted by Alexandre Mayran
Looks like private funders, HHMI,CZI etc., are not going to “save” US research. Europe is setting up mechanisms to attract US researchers & it may work. But, common, target junior talent, don’t shower money on superstars who will be flying professors & return to US when the science winter passes.
August 10, 2025 at 3:35 PM
Reposted by Alexandre Mayran
1/n Fun journey continues: Our new @cp-cellstemcell.bsky.social paper out on how the Inherent & Dormant Plasticity of Mouse Naive PSCs can be "Exaggerated" to Directly form ~E8.5 Transgene-Free (TF) Mouse SEMs & WITHOUT inducing 8-16-Morula-like "Embryo Founder Cells".

www.cell.com/cell-stem-ce...
Transgene-free generation of mouse post-gastrulation whole embryo models solely from naive ESCs and iPSCs
Hanna and colleagues show that signaling pathway modulation amplifies the inherent flexibility of genetically unmodified mouse naive PSCs to adopt extra-embryonic cell fate potential. This endows them...
www.cell.com
August 7, 2025 at 3:29 PM
Reposted by Alexandre Mayran
#jobAlert We are hiring! If you like #imaging ,gene regulation and a dynamic group please apply. We are looking for a research assistant with a master degree and prior experience in academia.
🎯 Hiring: Biology Research Assistant (M/F)
Join IGMM Montpellier to study gene expression dynamics during Drosophila development @laghalab.bsky.social
6-month contract, renewable up to 2 years.
Start Sept 15, 2025 | Apply by Aug 11
🔗 emploi.cnrs.fr/Offres/CDD/U...

#Hiring #Biology #Research #IGMM
Portail Emploi CNRS - Offre d'emploi - Assistant ingénieur en biologie (H/F)
emploi.cnrs.fr
July 28, 2025 at 4:11 PM
Reposted by Alexandre Mayran
1
To predict the behaviour of a primate, would you rather base your guess on a closely related species or one with a similar brain shape? We looked at brains & behaviours of 70 species, you’ll be surprised!

🧵Thread on our new preprint with @r3rt0.bsky.social , doi.org/10.1101/2025...
July 27, 2025 at 5:26 PM
Reposted by Alexandre Mayran
So excited to share my 1st paper !!🌞
Co-authored with @jules-vanaret.bsky.social @dunsingvalentin.bsky.social, we developped an integrated pipeline for imaging, segmenting and analysing cell-scale patterns in gene expression + tissue properties in complex 3D tissues
elifesciences.org/reviewed-pre...
A quantitative pipeline for whole-mount deep imaging and analysis of multi-layered organoids across scales
elifesciences.org
July 15, 2025 at 11:39 AM
Reposted by Alexandre Mayran
Finally out! 🥳 Our paper showing how a transposable element (TE) insertion can cause developmental phenotypes is now published @natgenet.nature.com 🧬🦠🐁
Below is a brief description of the major findings. Check the full version of the paper for more details: www.nature.com/articles/s41588-025-02248-5
Enhancer adoption by an LTR retrotransposon generates viral-like particles, causing developmental limb phenotypes - Nature Genetics
Activation of an LTR retrotransposon inserted upstream of the Fgf8 gene produces viral-like particles in the mouse developing limb, triggering apoptosis and causing limb malformation. This phenotype c...
www.nature.com
July 9, 2025 at 10:05 AM
Reposted by Alexandre Mayran
Our work bridging enhancer-promoter proximity to phenotypic outcomes in vivo is out! Shout out to @olimpiabompadre.bsky.social, to Marie Kmita's lab, and to all the co-authors. www.nature.com/articles/s41...
Liebenberg syndrome severity arises from variations in Pitx1 locus topology and proportion of ectopically transcribing cells - Nature Communications
Here the authors show that reducing enhancer-promoter distance at the Pitx1 locus increases proportion of Pitx1 forelimb expressing cells, worsening skeletal defects in Liebenberg syndrome. They also ...
www.nature.com
July 9, 2025 at 11:58 AM
Reposted by Alexandre Mayran
A dream come true: my first first-author publication! 🧬 🎉 Working to unravel the mysteries of long-range gene regulation has been an incredible journey. Endless gratitude to Evgeny, the lab, and all of the amazing collaborators who helped make this happen 🙌
Our paper describing the Range Extender element which is required and sufficient for long-range enhancer activation at the Shh locus is now available at @nature.com. Congrats to @gracebower.bsky.social who led the study. Below is a brief summary of the main findings www.nature.com/articles/s41... 1/
Range extender mediates long-distance enhancer activity - Nature
The REX element is associated with long-range enhancer–promoter interactions.
www.nature.com
July 2, 2025 at 7:54 PM
Reposted by Alexandre Mayran
Our paper describing the Range Extender element which is required and sufficient for long-range enhancer activation at the Shh locus is now available at @nature.com. Congrats to @gracebower.bsky.social who led the study. Below is a brief summary of the main findings www.nature.com/articles/s41... 1/
Range extender mediates long-distance enhancer activity - Nature
The REX element is associated with long-range enhancer–promoter interactions.
www.nature.com
July 2, 2025 at 4:17 PM
Reposted by Alexandre Mayran
Checkout the full story online now at Dev Cell, the product of a team effort with the help of our fantastic collaborators including @da-bar.bsky.social @borislenhard.bsky.social @mpercharde.bsky.social

Article link:
doi.org/10.1016/j.de...
June 27, 2025 at 3:07 PM